Yes — rio11.casino has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 rio11.casino has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700::6812:1ef answers · 443✓ 2606:4700::6812:ef answers · 443	yes
www over IPv6 www.rio11.casino has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700::6812:ef answers · 443✓ 2606:4700::6812:1ef answers · 443	yes
Mail servers (MX) have IPv6 No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. dalary.ns.cloudflare.com ✓keaton.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.

https://rio11.casino/ via 2606:4700::6812:1ef → 403

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/rio11.casino.svg)](https://aaaa.bot/rio11.casino)

Check again

rio11.casino Has IPv6

A (IPv4)	104.18.0.239 104.18.1.239
AAAA (IPv6)	2606:4700::6812:1ef 2606:4700::6812:ef

www.rio11.casino Has IPv6

A (IPv4)	104.18.1.239 104.18.0.239
AAAA (IPv6)	2606:4700::6812:ef 2606:4700::6812:1ef

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

IPv6 measurement: rio11.casino
Measured 2026-11-10 16:52:39 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.18.0.239, 104.18.1.239
AAAA (IPv6): 2606:4700::6812:1ef, 2606:4700::6812:ef
www AAAA:    2606:4700::6812:ef, 2606:4700::6812:1ef

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: rio11.casino has 2 IPv6 addresses and answers on every one we tested.
    2606:4700::6812:1ef: answers (TCP 443)
    2606:4700::6812:ef: answers (TCP 443)
- www over IPv6: www.rio11.casino has 2 IPv6 addresses and answers on every one we tested.
    2606:4700::6812:ef: answers (TCP 443)
    2606:4700::6812:1ef: answers (TCP 443)
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.
- Nameservers have IPv6: 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Loads over IPv6 with a valid certificate: HTTP 403.
    https://rio11.casino/ via 2606:4700::6812:1ef -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/NQB31Byyf5

Permanent link: aaaa.bot/r/NQB31Byyf5 · How we measure

Checked 2026-11-10 16:52:39 UTC. Full DNS report: dns.pizza/domain/rio11.casino · Age, certificate and blocklists: how.is/rio11.casino · JSON: /api/v1/rio11.casino